The New York chapter of Komen provides $4.8 million in grants in support of breast-cancer research and education.

Richardson-Heron was a critic of the national organization’s decision last month to cut funding for some Planned Parenthood affiliates. The national organization later backtracked and said it would continue to fund Planned Parenthood.

The New York group provides funding for Planned Parenthood programs in Nassau County.

Richardson-Heron said in a statement that she was leaving to “pursue new career opportunities.”